Question

please help will medal'



Nia solved the equation -1.98 = 5.2v + 13.1. Her answer was v = -2.9. She is fairly confident about her answer, but wants to do a quick check of her solution using estimation to make sure her answer is reasonable.

Which of the following shows a good check of her answer?



-2 = 5(-3) + 13

-3 = 5(-2) + 13

-1 = 5(-2) + 13

-2 = 5(-2) + 13

Answer 1

round the -1.98 to -2

Answer 2

5.2 rounds to about 5

Answer 3

her answer for v = is about -3

Answer 4

13.1 rounds to 13

Answer 5

put it all together....

Answer 6

For estimation and rounding numbers, if it is 0-4 round down to the closest number, if it is 5-9, round up to the closest number

Answer 7

-2 = 5(-3) + 13

That one has all the correct roundings

Answer 8

you good on this question?